Siemens SIPROTEC 5 7SA86 Distance Protection IED

Feature & Principle

It belongs to Siemens SIPROTEC 5 platform. It collects CT and VT voltage and current signals, calculates impedance to judge fault distance, realizes selective multi-zone distance protection. It supports classic distance, reactance method and backup directional overcurrent protection. It has sensitive earth fault detection for isolated / compensated neutral networks. Built-in disturbance recorder, event log and metering function. Supports IEC61850, Modbus TCP, DNP3 communication, with network security function. Modular I/O can be selected according to ordering suffix.

Specifications

Model: 7SA86-P1A6392 Brand: Siemens Series: SIPROTEC 5 Main function: Multi-zone distance protection Trip mode: 3-pole trip Minimum trip time: 9 ms Communication: IEC61850, Modbus TCP, DNP3 Configuration tool: DIGSI 5 Auxiliary power: 60~250VDC / 100~230VAC Mounting: Panel flush mounting Application: Transmission overhead line, underground cable, industrial medium/high voltage feeder Certification: CE, IEC

Components & Diagnostics

Main CPU board, analog CT/PT acquisition module, binary input/output module, power supply unit, front LCD HMI, backplane bus. Common faults: communication interruption, sampling signal abnormal, trip circuit self-check alarm, HMI display failure, firmware exception.

Product Brief

7SA86-P1A6392 distance protection relay, Siemens SIPROTEC 5 line protection IED spare widely used for power substation protection cabinet overhaul and replacement.